Made of nonallergenic waterproof natural rubber, Waterproof and sweat stink free and tasteless,washable. Make you feel light, sturdy, soft and flexible during your wear. Replacement for 12mm Tissot PRX Powermatic 80 40mm buckle WHAT YOU GET: 1 x Watch Band, 2 x TooL, 3 x Spring Exquisite craftsmanship and stylish design are perfect gifts for friends and family. If you have any problems, please feel free to contact with us. We are very happy to help you.